More than 25% of the world's forests are in Siberia.
51
The 'King Ranch' in Texas is bigger than the state of Rhode Island.
49
The Atlantic Ocean is saltier than the Pacific Ocean.
54
The longest cave in the world is the 'Mammoth Cave System' in the USA at 560,000 mtrs deep!
63
Australia's Great Barrier Reef is 1,250 miles long!
45
The Amazon rainforest produces more than 20% the world's oxygen supply.
182
In 1850, only 8% of the people in California were women.
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